: Large media servers or automated backup systems often rename files using alphanumeric strings. This could be an updated version of a video file labeled "sone477."
Are you trying to this file on a specific device, or did you find it in your system folders ? sone477mp4 upd
: Authentic updates for hardware (cameras, TVs, etc.) are typically found on the manufacturer’s official support pages, such as the Sony Support Portal . : Large media servers or automated backup systems